print help from all modules in top-level builds

this is rather hacky. a proper solution would auto-generate help from
the command line argument definitions, at the cost of needing to
bootstrap qmake first.

Change-Id: Iada6e25d5b31d7db0595309887f2d13295bbc1e3
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 10 insertions, 0 deletions

diff --git a/configure b/configure
index 82df73fb1b..7df10cec6a 100755
--- a/configure
+++ b/configure
@@ -522,6 +522,16 @@ done
 
 if [ "$OPT_HELP" = "yes" ]; then
     cat $relpath/config_help.txt
+    if [ -n "$CFG_TOPLEVEL" ]; then
+        IFS='
+'
+        for i in $relpathMangled/qt*/config_help.txt; do
+            if [ x"$i" != x"$relpath/config_help.txt" ]; then
+                echo
+                cat "$i"
+            fi
+        done
+    fi
     exit 0
 fi